body {
    margin: 0px;
    padding: 0px;
    font-family: "微软雅黑";
}

header {
    text-align: center;
    margin-top: 5%;
}

section {
    max-width: 500px;
    margin-left: 50%;
    transform: translate(-50%, 20%);
    -ms-transform: translate(-50%, 20%);
    -webkit-transform: translate(-50%, 20%);
    -moz-transform: translate(-50%, 20%);
    -o-transform: translate(-50%, 20%);
    position: relative;
    border-width: 1px;
    border-style: solid;
    border-color: #EAEAEA;
    border-radius: 5px;
    padding-bottom: 15px;
    padding-top: 45px;
}

form div {
    width: 90%;
    margin-top: 0px;
    margin-left: 5%;
}

#div_message {
    position: absolute;
    display: none;
    text-align: center;
    font-weight: bold;
    width: 100%;
    margin: 0px;
    margin-top: -35px;
    padding: 5px;
}
